920431513 has 2 divisors, whose sum is σ = 920431514. Its totient is φ = 920431512.

The previous prime is 920431489. The next prime is 920431529. The reversal of 920431513 is 315134029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 829267209 + 91164304 = 28797^2 + 9548^2 .

It is a cyclic number.

It is not a de Polignac number, because 920431513 - 2⁵ = 920431481 is a prime.

It is not a weakly prime, because it can be changed into another prime (920431543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460215756 + 460215757.

It is an arithmetic number, because the mean of its divisors is an integer number (460215757).

Almost surely, 2^920431513 is an apocalyptic number.

It is an amenable number.

920431513 is a deficient number, since it is larger than the sum of its proper divisors (1).

920431513 is an equidigital number, since it uses as much as digits as its factorization.

920431513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 920431513 is about 30338.6142234612. The cubic root of 920431513 is about 972.7408621332.

The spelling of 920431513 in words is "nine hundred twenty million, four hundred thirty-one thousand, five hundred thirteen".